Fluid-pressure-controlled reversing-gear.



A.HEBENDAHL FLUID PRESSURE comraouso REVERSING GEAR.

APPLICATION FILED FEB- 23, 1916. 1 V m Pawmefl 10, 19h.

2 SHEETSSHEET l.

T. A. HEDENDAHL.

mm PRESSURE cowouw REVERSING GEAR.

1 R APPLICATION FILED FEB. 24. 1916. W g gggfig f Patented Juiy 10, 1917. I

2 SHEETS-SHEET 2.

INVENTOR l id Jim To all whom may conceive:

Be it known that l, Tnnooonn A. E lison-N- DAHL, a citizen oi the United. Etetes residing at llenver, in the county of Derive? oncl State of Colorado, have invented encl useful Improvements in Flnid-Piessure- Controllecl ReversingG-esn of which the following is e specification.

This invention relates lloicl presents OPGT'cLlZ-Qfl means for controlling the revevsing gear of locomotive,-encl the principal ol gect of the invention is to provide on im peeved mechanism of shove shot-octet eclaptecl to locomotives Where the available space is limited.

objects encl advantages in the following more detailed of the invention.

in the accompanying (l swings, Figiwe 1 will appear (lcsci'iption a tore-shortened elevstionel view of a, re

vei'sing gees: controlling mechanism emhodying my invention; 2 a sectional view of the operating cylintlei" enol valve mechanism thereof; 3 an enlarged elevations]. view of the lever opemtecl mechanism; Fig, 4 a hi'olten longitudinal section of the cob portion of the reversing controlling mechanism; Fig. 5 a transverse section on the line a-c of Fig". fl; Fig. 6 s similac section on the line ii -J) of 4; Fig. T a clcteil face vievv of the main operating lever; and 8 a sicle view theveot.

i iccorcling to the construction illusti'otecl in the drawings, a section of channel heme l is inounteci on the boiler in locomotive oath and carries a movable housing 2 which SllETOUHClS the beam 1 and hes a cover plate 3 torpenmitting the assembly of the ports end application the housing to the oee::-

A roller mounted in hearings in the housing enol cover piste ll'ldGS on the s ope-r face of the channel hes-mo l oncl supports the housing, and resch eocl 5 is sewing-sci helovv' the beam and is secured to soicl housing.

The under face oil the channel boom is provided with rock teeth 6 for engagement with teeth of a latch block 7 monntecl Within the oncl ecljecent to the latch lolocl: is s pinion 8 having its teeth solspteol to engs e the teeth 6 on the channel boom, The pinioe fl is gtlllPOltQd movable lJQZltl ings t3 to eliole longitnclinelly on guide he picoviclocl in the encl ii a l lo. lltlllil.

18 is sliclehiy mounted on the shaft end is provided with a key for engaging in the key-Way 1?.

The cover piste 3 has fingers 3'? extending into the channel cc-am cavity and on opposite sides of said fingers are projections 19 teeming port of the lever element 18, so that longitnclinel movement of the housing is transmitted to the lever element which is connected by a link 536 to the rocker arm 13.

The latch clock 7 is connected "by links 21., on opposite sicles at the channel beam, to on B'CCGlllbl'lC shaft 522 having on operating hencile 13.

At the outer encl of the channel hes-m it there is monntecl o, velve casing having; e valve elminhei' containing-e, slicle valve and the valve is adapted to he operetecl lay the shaft 16 which is connected to the valve by means of a short lever 2?.

Adjacent to the lint: lifting lever 28 is e cylinder 29 containing a piston 30 connected to seicl lever by El, piston rod 31 and the cylinclec chambers at opposite sicles of the piston are connected by the respective pipes 32 encl 33 to ports Sal encl 35 leading to the sect ct slicle valve 26.

in operation, fluid under pressure heing supplied to valve chamber 25 through a, pipe 36 connected to suitable source of fluid pressure supply, ii it is desired to shift the "reversing gear to the right, the lever 23 is first inovecl to the position shown in toll lines in l of the drawings, sons to rotate the eccentric sheitt 22 end cause the latch lDlOClZ 'i to clisengege from the rock teeth 6. llhe lever 11 is then shittecl to the right, turning the rocket arm 13, so as to partially rotate the shaft 16 through the operation of the link 20 and the lever 1E3.

The side valve 26 is then inoveil so as to .i

nncoveic poet Ell end thus iioln'iit fioiol under I".

secs

right or -,oiston being-connected to the atmosphere through c. cavity 38 in the slide valve which then connects port with exhaust port 39.

T he lever :28 is thereupon operated by the movement or" the piston 3% to shift the reversing gear. a

Since pinion 8 1s mounted in longitudinally movable bearings, and lever 11 is loosely mounted on pin 10 when the lever ll is operated, the pinion is rolled elongthe rack teeth 6 and does not interfere with the action of the lever.

"When the lever 28 is shifted to the rignt by the piston 80, the reach rod is also moved to the right and being connected to the housing 2 it pulls the some to the rigmt and there is sufficient friction between the teeth of the pinion and the reel: to cause u reverse movement of the lever ll to nornial position and s corresponding movement of the slide valve 26 heel: to'the lop position, shown in Fig. 2 or the drawings, position, it will be noted that e "by-pose port 40 connects ports as end 35 so that opposing fluid pressures in the cylinder chembers on opposite sides of the niston 30 are quickly balanced. and further movement of the piston and the lever 528 is prevented.

When the reversing gesr has been shifted to the desired position, the lever 23 is shifted to the position shown in dotted lines in Fig. 4 and the latch block '2' thus ooereted to engage the rack teeth 6 so as to loclt the ports in their adjusted positions.

If it is desired to effect the movement the reversing geer in the o'onosite direction, the lever ll is moved to the left end the slide valve 26 operated to open the port so as to admit fluid under pressure to the cylinder chamber at the right of piston 80.

If it is desired to move the reversin gear by hand or more slowly, or it the fluid pressure happens to be insutlicient, the bend Wheel 12 is provided by which the reech rod may be actuated directly through the rotation of the pinion. 8 in engagement with the rack teeth 8. This is considered u. very desirable lecture, since there are times when there might be no fluid pressure or the pres sure may not be sufiicient to fully insure the Kill proper operation.

Having now described my invention, what I claim as new end desire to secure by Letters Potent, is

1. The combinetion with e locomotive rev vex-sing gee-r, cylinder, and e piston 'lillfii iu adopted to be actuated by iluid under pressure for controlling; the reversing gear, or e. valve for controlling: the admission end exhaust of fluid to end from seid cylinder, a shaft for operct' said valve, o guide member having henrings lfor said shei rt, c housing inclosing end movshle longitudinelly on seid member, will re lever mes nism carried by the housing for operating sold shaft.

2. The combination with a locomotive reversing gear, a cylinder, and a. piston therein adapted tobe actuated by fluid under pressure for controlling the reversing gear,

exhaust oifluid to and from said cylinder, e shaft for actuating said valve, 21 channeled guide member having bearings formic-untmg sold shaft Within the channel, a housing inclosing and adapted to move longitudinally on said member, s reach rod connecting said housing to the reversing gear, and a, lever mechanism carried by said housing and operated manually for. rotating said shaft to open the valve and operated upon movement of the reach rod for rotating said salt to close the valve.

3. In a reversing gear operating mechauism, the combination with e valve for controlling; fluid under pressure for operating the reversing gear, of a shaft for operating said valve, 3, housing inclosing and mounted. to slide longitudinally thereon, e bearing; 5 pin, a manually operated lever mechanism fulcrumed on said pin for rotating said shaft, a reach rod connecting the reversing gear with said housing, a hand Wheel secured to said bearing pin, and meens operated by said hand Wheel for mechanically shifting the reversing gear through the reach rod.

4. ln a reversing gear operating mechanism, the combination "with a valve for controlling fluid under pressure for operating 3 the reversing gear, of a guide member having rack teeth, a housing mounted to slide longitudinally on said member, a pinion mounted in said housing for engaging the reel; teeth, a reach rod connecting the re- 2 ver Ins gear with the housing, a bearing pin extending from said pinion, a hand wheel secured to said pin for operating" said pinion to shift the reach rod, and s manually operated lever mechanism fulcrumed on said 2 hearing" pin for operating said valve.

5. In a. reversing geer operating reschenisin, the combination with e valve for controlling the fluid under pressure for operating said gear, of a guide member nro- I vided with e reek, a. housing mounted to move longitudinally on said member, a reach rod connecting said housing with the reversing gear, a manually operated lever mechenism carried by the housing and op I eretively associated with said valve, e pinion connected to said lever mechanism and mounted in longitudinally movable beerings, and e. hend wheel for operating sold pinion.

d. In a reversing gear operating mocha. nism, the combination with e velve for controlling the fluid under pressure for operating seid geer, of e guide member provided with s reels, e hon inclosing end i of a. valve for controlling the admission and new mounted to meve longitndiinefiy en enifl member, a reach red eennecemg semi hensmg wlth the reversmg gear, e manually operated lever mechanism earned! by she 5 housing and operativelyeenneetedl an said valve, means for permltting movement of the lever mechamsm releclve to the hensing fer effecting the opening of $3161 vafiive lever meehemsm bemg shlfiel 1n the appesrlte direction upon movement of the my 

